diff --git a/main.js b/main.js
index 78ecef9..f2a1886 100644
--- a/main.js
+++ b/main.js
@@ -943,7 +943,7 @@ class LightMindMapPlugin extends obsidian.Plugin {
         overlay._lmmDragStartY = e.clientY;
         overlay._lmmDragTimer = setTimeout(() => {
           this._startDrag(overlay, node, e);
-        }, 200);
+        }, 120);
       }
     });
     el.addEventListener('click', (e) => {
@@ -1037,6 +1037,7 @@ class LightMindMapPlugin extends obsidian.Plugin {
     el.contentEditable = 'true';
     el.classList.add('lmm-editing');
     el.spellcheck = false;
+    
     el.focus({ preventScroll: false });
     const range = document.createRange();
     range.selectNodeContents(el);
@@ -2644,25 +2645,69 @@ class LightMindMapPlugin extends obsidian.Plugin {
     if (this.app.isMobile) {
       const filePath = (file.parent ? file.parent.path + '/' : '') + defaultName;
       await this.app.vault.adapter.writeBinary(filePath, uint8);
+      new obsidian.Notice('Saved to vault: ' + filePath);
       return true;
     }
     
     try {
-      const electron = require('electron');
-      const win = electron.remote.BrowserWindow.getFocusedWindow();
-      const result = await electron.remote.dialog.showSaveDialog(win, {
-        title: 'Export Mindmap as PNG',
-        defaultPath: defaultName,
-        filters: [{ name: 'PNG Image', extensions: ['png'] }]
-      });
-      if (result.canceled || !result.filePath) return false;
-      require('fs').writeFileSync(result.filePath, Buffer.from(arrayBuffer));
-      return true;
+      if (window.showSaveFilePicker) {
+        const handle = await window.showSaveFilePicker({
+          suggestedName: defaultName,
+          types: [{ description: 'PNG Image', accept: { 'image/png': ['.png'] } }]
+        });
+        const writable = await handle.createWritable();
+        await writable.write(arrayBuffer);
+        await writable.close();
+        return true;
+      }
     } catch (e) {
-      const filePath = (file.parent ? file.parent.path + '/' : '') + defaultName;
-      await this.app.vault.adapter.writeBinary(filePath, uint8);
-      return true;
+      if (e.name === 'AbortError' || e.name === 'NotAllowedError') {
+        return false;
+      }
     }
+    
+    try {
+      const electron = require('electron');
+      const { dialog } = electron;
+      if (dialog && dialog.showSaveDialog) {
+        const result = await dialog.showSaveDialog({
+          title: 'Export Mindmap as PNG',
+          defaultPath: defaultName,
+          filters: [{ name: 'PNG Image', extensions: ['png'] }]
+        });
+        if (result && result.canceled) {
+          return false;
+        }
+        if (result && result.filePath) {
+          require('fs').writeFileSync(result.filePath, Buffer.from(arrayBuffer));
+          return true;
+        }
+      }
+    } catch (e) {}
+    
+    try {
+      const electron = require('electron');
+      if (electron.remote && electron.remote.dialog) {
+        const win = electron.remote.BrowserWindow.getFocusedWindow();
+        const result = await electron.remote.dialog.showSaveDialog(win, {
+          title: 'Export Mindmap as PNG',
+          defaultPath: defaultName,
+          filters: [{ name: 'PNG Image', extensions: ['png'] }]
+        });
+        if (result && result.canceled) {
+          return false;
+        }
+        if (result && result.filePath) {
+          require('fs').writeFileSync(result.filePath, Buffer.from(arrayBuffer));
+          return true;
+        }
+      }
+    } catch (e) {}
+    
+    const filePath = (file.parent ? file.parent.path + '/' : '') + defaultName;
+    await this.app.vault.adapter.writeBinary(filePath, uint8);
+    new obsidian.Notice('Saved to vault: ' + filePath);
+    return true;
   }
 
   async _exportPNG(overlay) {
diff --git a/manifest.json b/manifest.json
index b12c0f0..ed0f38b 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
   "id": "light-mindmap",
   "name": "Light Mindmap",
-  "version": "1.4.2",
+  "version": "1.5.0",
   "minAppVersion": "1.4.0",
   "description": "Feature-rich mindmap plugin — multiple layouts, themes, node shapes & line styles, wikilink support, node collapse, PNG export — all from plain markdown headings, no custom syntax needed.",
   "author": "Light Ning",
diff --git a/styles.css b/styles.css
index c1f6b2b..131efe4 100644
--- a/styles.css
+++ b/styles.css
@@ -290,18 +290,23 @@
   cursor: text;
   user-select: text;
   -webkit-user-select: text;
-  outline: 2px solid #6366F1;
-  outline-offset: 3px;
+  outline: none;
+  outline-offset: 0;
   z-index: 8;
-  min-width: 80px;
+  min-width: 120px;
   caret-color: currentColor;
-  transform: none !important;
+  transform: scale(1.03) !important;
+  box-shadow:
+    0 0 0 2px var(--lmm-color, #6366F1),
+    0 0 16px var(--lmm-color, #6366F1),
+    0 0 28px var(--lmm-color, #6366F1) !important;
+  border-width: 2px !important;
+  border-color: var(--lmm-color, #6366F1) !important;
+  opacity: 0.95;
+  transition: transform 0.12s ease, box-shadow 0.12s ease;
 }
 
-.lmm-node.lmm-editing.lmm-node-root,
-.lmm-node.lmm-editing.lmm-node-d1 {
-  caret-color: #fff;
-}
+
 
 /* Mention autocomplete popup */
 .lmm-mention-popup {
@@ -682,7 +687,7 @@
   pointer-events: none;
   opacity: 0.95;
   z-index: 1000;
-  transform: translate(-50%, -50%);
+  transform: translate(-50%, -50%) scale(1.08);
   box-shadow: 
     0 12px 32px rgba(0, 0, 0, 0.28),
     0 4px 12px rgba(0, 0, 0, 0.15),